ORIGINAL PAPER
Effects of pelleting and expanding of vegetable feeds on in situ protein and starch digestion in dairy cows
,
 
,
 
 
 
More details
Hide details
1
Department of Animal Science, Agricultural University of Norway, P.O. Box 5025, N-1432 Ås, Norway
 
2
Present: Felleskjøpet Fôrutvikling, 7005 Trondheim, Norway
 
 
Publication date: 2003-07-15
 
 
Corresponding author
O. M. Harstad   

Department of Animal Science, Agricultural University of Norway, P.O. Box 5025, N-1432 Ås, Norway
 
 
J. Anim. Feed Sci. 2003;12(3):435-449
 
KEYWORDS
ABSTRACT
In situ digestion of protein and starch in barley, oats, wheat, wheat bran, maize, sorghum, peas, and soyabeans was evaluated in dairy cows after milling (untreated), pelleting (ca. 81°C) and expander processing at two different temperatures (110 or 130°C). Effective degradation of crude protein (EPD) and starch (ESD) in the rumen, as well as total tract indigested protein (IP) and starch (IS) fractions, were determined by in situ methods. Pelleting significantly decreased EPD of wheat and wheat bran by 14 and 10 percentage units, respectively, and increased ESD in maize by 10 percentage units. Expander treatment efficiently protected protein from rumen degradation in all feeds evaluated, except maize. The ESD of maize, sorghum, peas and oats increased with 31, 18, 22 and 5 percentage units, respectively, after expander treatment at 130°C. The IP fraction of sorghum and peas increased after expander treatment. In maize, sorghum and peas the IS fraction decreased by heat treatment. It is concluded that protein and starch digestion of vegetable feeds in dairy cows can be modified by different heat treatment.
 
CITATIONS (15):
1.
Effect of extrusion onin situruminal protein degradability andin vitrodigestibility of undegraded protein from different feedstuffs
Estela M Solanas, Carlos Castrillo, Miguel Jover, Antonio de Vega
Journal of the Science of Food and Agriculture
 
2.
In vitrogas production profiles and fermentation end-products in processed barley, maize and milo
Arash Azarfar, Kuenga Namgay, Wilbert F Pellikaan, Seerp Tamminga, Antonius FB van der Poel
Journal of the Science of Food and Agriculture
 
3.
Profile of digested feed amino acids from untreated and expander treated feeds estimated using in situ methods in dairy cows
P. Lund, M.R. Weisbjerg, T. Hvelplund
Livestock Science
 
4.
Subacute ruminal acidosis challenge changed in situ degradability of feedstuffs in dairy goats
Fei Li, Yangchun Cao, Nannan Liu, Xinjian Yang, Junhu Yao, Dabing Yan
Journal of Dairy Science
 
5.
Extrusion of sorghum starch enhances ruminal and intestinal digestibility, rumen microbial yield and growth in lambs fed on high-concentrate diets
M. Yahaghi, J.B. Liang, J. Balcells, R. Valizadeh, M.F. Jahromi, R. Alimon, Y.W. Ho
Animal Feed Science and Technology
 
6.
Effect of conventional and extrusion pelleting on in situ ruminal degradability of starch, protein, and fibre in cattle
A. Razzaghi, M. Larsen, P. Lund, M.R. Weisbjerg
Livestock Science
 
7.
Effects of cereals and/or protein supplement extrusion on diet utilisation and performance of intensively reared cattle
E. Solanas, C. Castrillo, M. Fondevila, Q.O. Ruiz Narváez, J.A Guada
Livestock Science
 
8.
Effect of extruding the cereal and/or the legume protein supplement of a compound feed on in vitro ruminal nutrient digestion and nitrogen metabolism
E. Solanas, C. Castrillo, S. Calsamiglia
Journal of Animal Physiology and Animal Nutrition
 
9.
In vitrogas production profiles and fermentation end-products in processed peas, lupins and faba beans
Arash Azarfar, Seerp Tamminga, WF Pellikaan, Antonius FB van der Poel
Journal of the Science of Food and Agriculture
 
10.
Effect of starch granule structure, associated components and processing on nutritive value of cereal starch: A review
B. Svihus, A.K. Uhlen, O.M. Harstad
Animal Feed Science and Technology
 
11.
Ruminal In Vitro Protein Degradation and Apparent Digestibility of Energy and Nutrients in Sheep Fed Native or Ensiled + Toasted Pea (Pisum sativum) Grains
Martin Bachmann, Christian Kuhnitzsch, Paul Okon, Siriwan Martens, Jörg Greef, Olaf Steinhöfel, Annette Zeyner
Animals
 
12.
Determination of in situ ruminal crude protein and starch degradation values of compound feeds from single feeds
Goran Grubješić, Natascha Titze, Jochen Krieg, Markus Rodehutscord
Archives of Animal Nutrition
 
13.
Effect of Processing Methods (Rolling, Steam-Flaking, Pelleting) on Protein Molecular Structure Profile, Rumen Degradation, and Intestinal Digestion of Cool-Climate Adapted Oats Grain in Comparison with Barley Grain in Western Canada
Marcela Tosta, Luciana Prates, David Christensen, Peiqiang Yu
Livestock Science
 
14.
The effect of the inclusion of pea in lamb fattening concentrate on in vitro and in situ rumen fermentation
Margalida Joy, Pablo Rufino‐Moya, Sandra Lobón, Mireia Blanco
Journal of the Science of Food and Agriculture
 
15.
Rumen undegradable protein (RUP) and its intestinal digestibility after steam flaking of cereal grains
Maria Chrenkova, Zuzana Formelova, Zuzana Ceresnakova, Catalin Dragomir, Matus Rajsky, Ana Cismileanu, Martin Weisbjerg
Czech Journal of Animal Science
 
ISSN:1230-1388
Journals System - logo
Scroll to top